KTA-Tator, Inc. gratefully acknowledges SSPC for their permission to post the following papers presented at past PACE conferences.
“New Lead Regulations” (PDF 102Kb) This paper addresses two recent regulatory actions regarding lead. The first is the October 15, 2008 revision to the National Ambient Air Quality Standards for Lead. The second regulation is the August 14, 2008 update to the OSHA Instruction: National Emphasis Program – Lead, which describes OSHA’s nation-wide emphasis on reducing occupational lead exposures. The authors will overview the regulatory actions and discuss potential impacts on the painting industry.
Alison B. Kaelin, CQA, Quality Assurance Manager
Daniel O’Malley, Manager, EH&S Services
“What is Needed for a Bridge Coating to Last 100 Years or More?” (PDF 62Kb) Although bridge construction extends back thousands of years, steel bridge painting is in its infancy. The first iron bridge was built in 1779, and the first steel was used in a bridge in 1828. Coated bridges from the 19th century survive, raising the question, “Can coatings protect steel bridges for the next hundred years?” The author discusses how to achieve 100 years of service life using current materials and offers recommendations for improving steel bridge painting.
Eric S. Kline, PCS, Executive Vice President
Scott B. Rice, Manager, Commercial Services
John M. Ekiert, PE, Project Manager, Pennsylvania
“Galvanic Drilling and Problems With Coating Dissimilar Metals in Corrosive Environments” (PDF 421Kb) The installation of protective coating systems must be accomplished in a manner that will avoid adverse electrolytic coupling between dissimilar metals in water tanks, process equipment, and even some atmospheric applications where condensing humidity and rainwater provide the aqueous medium for electrolytes. This paper discusses several examples of premature coating and structural failures resulting from the mixing of dissimilar metal types in systems where the anode and cathode areas are not optimized by design or engineering controls.
David S. Leyland, formerly with KTA-Tator, Inc.
E. Bud Senkowski, PE, Senior Coatings Consultant
“Cleaning and Painting of the Sunshine Skyway Cable Stay Bridge: A Challenging Repainting Project of a Signature Florida Bridge” (PDF 3932Kb) The Sunshine Skyway Cable Stay Bridge is the signature bridge in the State of Florida. During 2004 the decision was made to repaint the stay cables for corrosion protection and aesthetic issues. The authors participated in a coatings condition assessment, plan development for refurbishing the coating system, and project execution. This paper identifies areas that made the Sunshine Skyway Bridge a challenging project such as: coatings condition assessment, paint specifications, access, containment system, execution, and final acceptance.
Jose (Pepe) Garcia, PE, FDOT
Beth Steimle, PE, PB Americas, Inc.
Greg Richards, KTA-Tator, Inc.
“Coating Failures-Causes and Corrections” (PDF 87Kb) Industrial and marine protective coating systems are most commonly applied without incident, and perform as expected over their anticipated service life. However, occasionally, a coating system will fail prematurely, for unexpected reasons, and with expensive consequences. This paper addresses those unexpected failures, and provides reasons and remedies for such occurrences.
Kenneth B. Tator, PE, KTA-Tator, Inc.
“Rehabilitation of an Aging Concrete Reservoir Adit Tower” (PDF 126Kb) Adit towers are generally vertical, large diameter concrete pipes that serve as vaults for valves used to drain and fill a reservoir. The tower runs from several feet above the waterline down through the reservoir and into the reservoir bed for some distance. Many of these towers and reservoirs are old and deteriorating, as the United States suffers from an aged infrastructure. External cracking is common above the waterline; weeping and leaking cracks are often present on the interior, and the valves, piping and infrastructure (stairways, pipe supports and structural steel) are often corroded. This paper describes the process (assessment, testing and construction) used to rehabilitate a decades old tower that was experiencing all of the problems identified above. The paper discusses the procedures that were performed to (1) repair cracks in the exterior walls above the waterline, (2) stop leaking cracks on the interior walls below the waterline, (3) line the interior walls with a moisture vapor resistant epoxy and (4) coat the interior steel surfaces.
Raymond S. Tombaugh, Senior Coatings Consultant
Mongkol Mahavongtrakul, PE, San Francisco Public Utilities Commission
“Coating Failures and Misapplications in Commercial Painting” (PDF 58Kb) While commercial painting is often thought to be less rigorous or less technical than industrial painting, the commercial painting industry has its own set of demands on a coating and is not without its share of coating problems. The authors experience demonstrates that there are commonalities in failures of coatings in commercial painting. This paper discusses a number of failures that are commonly found in the commercial painting field including painting of galvanized surfaces, coating of concrete surfaces (both floors and exterior building facades), use of elastomeric coatings, painting intricate surfaces, and painting plaster, drywall and wood surfaces. The paper describes both the cause of the failures and the appropriate methods of remediation and prevention.
Raymond S. Tombaugh, Senior Coatings Consultant